pfctl.c revision 335058
1/* $OpenBSD: pfctl.c,v 1.278 2008/08/31 20:18:17 jmc Exp $ */ 2 3/*- 4 * SPDX-License-Identifier: BSD-2-Clause 5 * 6 * Copyright (c) 2001 Daniel Hartmeier 7 * Copyright (c) 2002,2003 Henning Brauer 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 14 * - Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * - Redistributions in binary form must reproduce the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer in the documentation and/or other materials provided 19 * with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 29 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 31 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 * 34 */ 35 36#include <sys/cdefs.h> 37__FBSDID("$FreeBSD: stable/11/sbin/pfctl/pfctl.c 335058 2018-06-13 13:15:04Z kp $"); 38 39#include <sys/types.h> 40#include <sys/ioctl.h> 41#include <sys/socket.h> 42#include <sys/stat.h> 43#include <sys/endian.h> 44 45#include <net/if.h> 46#include <netinet/in.h> 47#include <net/pfvar.h> 48#include <arpa/inet.h> 49#include <net/altq/altq.h> 50#include <sys/sysctl.h> 51 52#include <err.h> 53#include <errno.h> 54#include <fcntl.h> 55#include <limits.h> 56#include <netdb.h> 57#include <stdint.h> 58#include <stdio.h> 59#include <stdlib.h> 60#include <string.h> 61#include <unistd.h> 62 63#include "pfctl_parser.h" 64#include "pfctl.h" 65 66void usage(void); 67int pfctl_enable(int, int); 68int pfctl_disable(int, int); 69int pfctl_clear_stats(int, int); 70int pfctl_get_skip_ifaces(void); 71int pfctl_check_skip_ifaces(char *); 72int pfctl_clear_skip_ifaces(struct pfctl *); 73int pfctl_clear_interface_flags(int, int); 74int pfctl_clear_rules(int, int, char *); 75int pfctl_clear_nat(int, int, char *); 76int pfctl_clear_altq(int, int); 77int pfctl_clear_src_nodes(int, int); 78int pfctl_clear_states(int, const char *, int); 79void pfctl_addrprefix(char *, struct pf_addr *); 80int pfctl_kill_src_nodes(int, const char *, int); 81int pfctl_net_kill_states(int, const char *, int); 82int pfctl_label_kill_states(int, const char *, int); 83int pfctl_id_kill_states(int, const char *, int); 84void pfctl_init_options(struct pfctl *); 85int pfctl_load_options(struct pfctl *); 86int pfctl_load_limit(struct pfctl *, unsigned int, unsigned int); 87int pfctl_load_timeout(struct pfctl *, unsigned int, unsigned int); 88int pfctl_load_debug(struct pfctl *, unsigned int); 89int pfctl_load_logif(struct pfctl *, char *); 90int pfctl_load_hostid(struct pfctl *, unsigned int); 91int pfctl_get_pool(int, struct pf_pool *, u_int32_t, u_int32_t, int, 92 char *); 93void pfctl_print_rule_counters(struct pf_rule *, int); 94int pfctl_show_rules(int, char *, int, enum pfctl_show, char *, int); 95int pfctl_show_nat(int, int, char *); 96int pfctl_show_src_nodes(int, int); 97int pfctl_show_states(int, const char *, int); 98int pfctl_show_status(int, int); 99int pfctl_show_running(int); 100int pfctl_show_timeouts(int, int); 101int pfctl_show_limits(int, int); 102void pfctl_debug(int, u_int32_t, int); 103int pfctl_test_altqsupport(int, int); 104int pfctl_show_anchors(int, int, char *); 105int pfctl_ruleset_trans(struct pfctl *, char *, struct pf_anchor *); 106int pfctl_load_ruleset(struct pfctl *, char *, 107 struct pf_ruleset *, int, int); 108int pfctl_load_rule(struct pfctl *, char *, struct pf_rule *, int); 109const char *pfctl_lookup_option(char *, const char **); 110 111struct pf_anchor_global pf_anchors; 112struct pf_anchor pf_main_anchor; 113static struct pfr_buffer skip_b; 114 115const char *clearopt; 116char *rulesopt; 117const char *showopt; 118const char *debugopt; 119char *anchoropt; 120const char *optiopt = NULL; 121char *pf_device = "/dev/pf"; 122char *ifaceopt; 123char *tableopt; 124const char *tblcmdopt; 125int src_node_killers; 126char *src_node_kill[2]; 127int state_killers; 128char *state_kill[2]; 129int loadopt; 130int altqsupport; 131 132int dev = -1; 133int first_title = 1; 134int labels = 0; 135 136#define INDENT(d, o) do { \ 137 if (o) { \ 138 int i; \ 139 for (i=0; i < d; i++) \ 140 printf(" "); \ 141 } \ 142 } while (0); \ 143 144 145static const struct { 146 const char *name; 147 int index; 148} pf_limits[] = { 149 { "states", PF_LIMIT_STATES }, 150 { "src-nodes", PF_LIMIT_SRC_NODES }, 151 { "frags", PF_LIMIT_FRAGS }, 152 { "table-entries", PF_LIMIT_TABLE_ENTRIES }, 153 { NULL, 0 } 154}; 155 156struct pf_hint { 157 const char *name; 158 int timeout; 159}; 160static const struct pf_hint pf_hint_normal[] = { 161 { "tcp.first", 2 * 60 }, 162 { "tcp.opening", 30 }, 163 { "tcp.established", 24 * 60 * 60 }, 164 { "tcp.closing", 15 * 60 }, 165 { "tcp.finwait", 45 }, 166 { "tcp.closed", 90 }, 167 { "tcp.tsdiff", 30 }, 168 { NULL, 0 } 169}; 170static const struct pf_hint pf_hint_satellite[] = { 171 { "tcp.first", 3 * 60 }, 172 { "tcp.opening", 30 + 5 }, 173 { "tcp.established", 24 * 60 * 60 }, 174 { "tcp.closing", 15 * 60 + 5 }, 175 { "tcp.finwait", 45 + 5 }, 176 { "tcp.closed", 90 + 5 }, 177 { "tcp.tsdiff", 60 }, 178 { NULL, 0 } 179}; 180static const struct pf_hint pf_hint_conservative[] = { 181 { "tcp.first", 60 * 60 }, 182 { "tcp.opening", 15 * 60 }, 183 { "tcp.established", 5 * 24 * 60 * 60 }, 184 { "tcp.closing", 60 * 60 }, 185 { "tcp.finwait", 10 * 60 }, 186 { "tcp.closed", 3 * 60 }, 187 { "tcp.tsdiff", 60 }, 188 { NULL, 0 } 189}; 190static const struct pf_hint pf_hint_aggressive[] = { 191 { "tcp.first", 30 }, 192 { "tcp.opening", 5 }, 193 { "tcp.established", 5 * 60 * 60 }, 194 { "tcp.closing", 60 }, 195 { "tcp.finwait", 30 }, 196 { "tcp.closed", 30 }, 197 { "tcp.tsdiff", 10 }, 198 { NULL, 0 } 199}; 200 201static const struct { 202 const char *name; 203 const struct pf_hint *hint; 204} pf_hints[] = { 205 { "normal", pf_hint_normal }, 206 { "satellite", pf_hint_satellite }, 207 { "high-latency", pf_hint_satellite }, 208 { "conservative", pf_hint_conservative }, 209 { "aggressive", pf_hint_aggressive }, 210 { NULL, NULL } 211}; 212 213static const char *clearopt_list[] = { 214 "nat", "queue", "rules", "Sources", 215 "states", "info", "Tables", "osfp", "all", NULL 216}; 217 218static const char *showopt_list[] = { 219 "nat", "queue", "rules", "Anchors", "Sources", "states", "info", 220 "Interfaces", "labels", "timeouts", "memory", "Tables", "osfp", 221 "Running", "all", NULL 222}; 223 224static const char *tblcmdopt_list[] = { 225 "kill", "flush", "add", "delete", "load", "replace", "show", 226 "test", "zero", "expire", NULL 227}; 228 229static const char *debugopt_list[] = { 230 "none", "urgent", "misc", "loud", NULL 231}; 232 233static const char *optiopt_list[] = { 234 "none", "basic", "profile", NULL 235}; 236 237void 238usage(void) 239{ 240 extern char *__progname; 241 242 fprintf(stderr, 243"usage: %s [-AdeghmNnOPqRrvz] [-a anchor] [-D macro=value] [-F modifier]\n" 244 "\t[-f file] [-i interface] [-K host | network]\n" 245 "\t[-k host | network | label | id] [-o level] [-p device]\n" 246 "\t[-s modifier] [-t table -T command [address ...]] [-x level]\n", 247 __progname); 248 249 exit(1); 250} 251 252int 253pfctl_enable(int dev, int opts) 254{ 255 if (ioctl(dev, DIOCSTART)) { 256 if (errno == EEXIST) 257 errx(1, "pf already enabled"); 258 else if (errno == ESRCH) 259 errx(1, "pfil registeration failed"); 260 else 261 err(1, "DIOCSTART"); 262 } 263 if ((opts & PF_OPT_QUIET) == 0) 264 fprintf(stderr, "pf enabled\n"); 265 266 if (altqsupport && ioctl(dev, DIOCSTARTALTQ)) 267 if (errno != EEXIST) 268 err(1, "DIOCSTARTALTQ"); 269 270 return (0); 271} 272 273int 274pfctl_disable(int dev, int opts) 275{ 276 if (ioctl(dev, DIOCSTOP)) { 277 if (errno == ENOENT) 278 errx(1, "pf not enabled"); 279 else 280 err(1, "DIOCSTOP"); 281 } 282 if ((opts & PF_OPT_QUIET) == 0) 283 fprintf(stderr, "pf disabled\n"); 284 285 if (altqsupport && ioctl(dev, DIOCSTOPALTQ)) 286 if (errno != ENOENT) 287 err(1, "DIOCSTOPALTQ"); 288 289 return (0); 290} 291 292int 293pfctl_clear_stats(int dev, int opts) 294{ 295 if (ioctl(dev, DIOCCLRSTATUS)) 296 err(1, "DIOCCLRSTATUS"); 297 if ((opts & PF_OPT_QUIET) == 0) 298 fprintf(stderr, "pf: statistics cleared\n"); 299 return (0); 300} 301 302int 303pfctl_get_skip_ifaces(void) 304{ 305 bzero(&skip_b, sizeof(skip_b)); 306 skip_b.pfrb_type = PFRB_IFACES; 307 for (;;) { 308 pfr_buf_grow(&skip_b, skip_b.pfrb_size); 309 skip_b.pfrb_size = skip_b.pfrb_msize; 310 if (pfi_get_ifaces(NULL, skip_b.pfrb_caddr, &skip_b.pfrb_size)) 311 err(1, "pfi_get_ifaces"); 312 if (skip_b.pfrb_size <= skip_b.pfrb_msize) 313 break; 314 } 315 return (0); 316} 317 318int 319pfctl_check_skip_ifaces(char *ifname) 320{ 321 struct pfi_kif *p; 322 323 PFRB_FOREACH(p, &skip_b) 324 if ((p->pfik_flags & PFI_IFLAG_SKIP) && !strcmp(ifname, p->pfik_name)) 325 p->pfik_flags &= ~PFI_IFLAG_SKIP; 326 return (0); 327} 328 329int 330pfctl_clear_skip_ifaces(struct pfctl *pf) 331{ 332 struct pfi_kif *p; 333 334 PFRB_FOREACH(p, &skip_b) 335 if (p->pfik_flags & PFI_IFLAG_SKIP) 336 pfctl_set_interface_flags(pf, p->pfik_name, PFI_IFLAG_SKIP, 0); 337 return (0); 338} 339 340int 341pfctl_clear_interface_flags(int dev, int opts) 342{ 343 struct pfioc_iface pi; 344 345 if ((opts & PF_OPT_NOACTION) == 0) { 346 bzero(&pi, sizeof(pi)); 347 pi.pfiio_flags = PFI_IFLAG_SKIP; 348 349 if (ioctl(dev, DIOCCLRIFFLAG, &pi)) 350 err(1, "DIOCCLRIFFLAG"); 351 if ((opts & PF_OPT_QUIET) == 0) 352 fprintf(stderr, "pf: interface flags reset\n"); 353 } 354 return (0); 355} 356 357int 358pfctl_clear_rules(int dev, int opts, char *anchorname) 359{ 360 struct pfr_buffer t; 361 362 memset(&t, 0, sizeof(t)); 363 t.pfrb_type = PFRB_TRANS; 364 if (pfctl_add_trans(&t, PF_RULESET_SCRUB, anchorname) || 365 pfctl_add_trans(&t, PF_RULESET_FILTER, anchorname) || 366 pfctl_trans(dev, &t, DIOCXBEGIN, 0) || 367 pfctl_trans(dev, &t, DIOCXCOMMIT, 0)) 368 err(1, "pfctl_clear_rules"); 369 if ((opts & PF_OPT_QUIET) == 0) 370 fprintf(stderr, "rules cleared\n"); 371 return (0); 372} 373 374int 375pfctl_clear_nat(int dev, int opts, char *anchorname) 376{ 377 struct pfr_buffer t; 378 379 memset(&t, 0, sizeof(t)); 380 t.pfrb_type = PFRB_TRANS; 381 if (pfctl_add_trans(&t, PF_RULESET_NAT, anchorname) || 382 pfctl_add_trans(&t, PF_RULESET_BINAT, anchorname) || 383 pfctl_add_trans(&t, PF_RULESET_RDR, anchorname) || 384 pfctl_trans(dev, &t, DIOCXBEGIN, 0) || 385 pfctl_trans(dev, &t, DIOCXCOMMIT, 0)) 386 err(1, "pfctl_clear_nat"); 387 if ((opts & PF_OPT_QUIET) == 0) 388 fprintf(stderr, "nat cleared\n"); 389 return (0); 390} 391 392int 393pfctl_clear_altq(int dev, int opts) 394{ 395 struct pfr_buffer t; 396 397 if (!altqsupport) 398 return (-1); 399 memset(&t, 0, sizeof(t)); 400 t.pfrb_type = PFRB_TRANS; 401 if (pfctl_add_trans(&t, PF_RULESET_ALTQ, "") || 402 pfctl_trans(dev, &t, DIOCXBEGIN, 0) || 403 pfctl_trans(dev, &t, DIOCXCOMMIT, 0)) 404 err(1, "pfctl_clear_altq"); 405 if ((opts & PF_OPT_QUIET) == 0) 406 fprintf(stderr, "altq cleared\n"); 407 return (0); 408} 409 410int 411pfctl_clear_src_nodes(int dev, int opts) 412{ 413 if (ioctl(dev, DIOCCLRSRCNODES)) 414 err(1, "DIOCCLRSRCNODES"); 415 if ((opts & PF_OPT_QUIET) == 0) 416 fprintf(stderr, "source tracking entries cleared\n"); 417 return (0); 418} 419 420int 421pfctl_clear_states(int dev, const char *iface, int opts) 422{ 423 struct pfioc_state_kill psk; 424 425 memset(&psk, 0, sizeof(psk)); 426 if (iface != NULL && strlcpy(psk.psk_ifname, iface, 427 sizeof(psk.psk_ifname)) >= sizeof(psk.psk_ifname)) 428 errx(1, "invalid interface: %s", iface); 429 430 if (ioctl(dev, DIOCCLRSTATES, &psk)) 431 err(1, "DIOCCLRSTATES"); 432 if ((opts & PF_OPT_QUIET) == 0) 433 fprintf(stderr, "%d states cleared\n", psk.psk_killed); 434 return (0); 435} 436 437void 438pfctl_addrprefix(char *addr, struct pf_addr *mask) 439{ 440 char *p; 441 const char *errstr; 442 int prefix, ret_ga, q, r; 443 struct addrinfo hints, *res; 444 445 if ((p = strchr(addr, '/')) == NULL) 446 return; 447 448 *p++ = '\0'; 449 prefix = strtonum(p, 0, 128, &errstr); 450 if (errstr) 451 errx(1, "prefix is %s: %s", errstr, p); 452 453 bzero(&hints, sizeof(hints)); 454 /* prefix only with numeric addresses */ 455 hints.ai_flags |= AI_NUMERICHOST; 456 457 if ((ret_ga = getaddrinfo(addr, NULL, &hints, &res))) { 458 errx(1, "getaddrinfo: %s", gai_strerror(ret_ga)); 459 /* NOTREACHED */ 460 } 461 462 if (res->ai_family == AF_INET && prefix > 32) 463 errx(1, "prefix too long for AF_INET"); 464 else if (res->ai_family == AF_INET6 && prefix > 128) 465 errx(1, "prefix too long for AF_INET6"); 466 467 q = prefix >> 3; 468 r = prefix & 7; 469 switch (res->ai_family) { 470 case AF_INET: 471 bzero(&mask->v4, sizeof(mask->v4)); 472 mask->v4.s_addr = htonl((u_int32_t) 473 (0xffffffffffULL << (32 - prefix))); 474 break; 475 case AF_INET6: 476 bzero(&mask->v6, sizeof(mask->v6)); 477 if (q > 0) 478 memset((void *)&mask->v6, 0xff, q); 479 if (r > 0) 480 *((u_char *)&mask->v6 + q) = 481 (0xff00 >> r) & 0xff; 482 break; 483 } 484 freeaddrinfo(res); 485} 486 487int 488pfctl_kill_src_nodes(int dev, const char *iface, int opts) 489{ 490 struct pfioc_src_node_kill psnk; 491 struct addrinfo *res[2], *resp[2]; 492 struct sockaddr last_src, last_dst; 493 int killed, sources, dests; 494 int ret_ga; 495 496 killed = sources = dests = 0; 497 498 memset(&psnk, 0, sizeof(psnk)); 499 memset(&psnk.psnk_src.addr.v.a.mask, 0xff, 500 sizeof(psnk.psnk_src.addr.v.a.mask)); 501 memset(&last_src, 0xff, sizeof(last_src)); 502 memset(&last_dst, 0xff, sizeof(last_dst)); 503 504 pfctl_addrprefix(src_node_kill[0], &psnk.psnk_src.addr.v.a.mask); 505 506 if ((ret_ga = getaddrinfo(src_node_kill[0], NULL, NULL, &res[0]))) { 507 errx(1, "getaddrinfo: %s", gai_strerror(ret_ga)); 508 /* NOTREACHED */ 509 } 510 for (resp[0] = res[0]; resp[0]; resp[0] = resp[0]->ai_next) { 511 if (resp[0]->ai_addr == NULL) 512 continue; 513 /* We get lots of duplicates. Catch the easy ones */ 514 if (memcmp(&last_src, resp[0]->ai_addr, sizeof(last_src)) == 0) 515 continue; 516 last_src = *(struct sockaddr *)resp[0]->ai_addr; 517 518 psnk.psnk_af = resp[0]->ai_family; 519 sources++; 520 521 if (psnk.psnk_af == AF_INET) 522 psnk.psnk_src.addr.v.a.addr.v4 = 523 ((struct sockaddr_in *)resp[0]->ai_addr)->sin_addr; 524 else if (psnk.psnk_af == AF_INET6) 525 psnk.psnk_src.addr.v.a.addr.v6 = 526 ((struct sockaddr_in6 *)resp[0]->ai_addr)-> 527 sin6_addr; 528 else 529 errx(1, "Unknown address family %d", psnk.psnk_af); 530 531 if (src_node_killers > 1) { 532 dests = 0; 533 memset(&psnk.psnk_dst.addr.v.a.mask, 0xff, 534 sizeof(psnk.psnk_dst.addr.v.a.mask)); 535 memset(&last_dst, 0xff, sizeof(last_dst)); 536 pfctl_addrprefix(src_node_kill[1], 537 &psnk.psnk_dst.addr.v.a.mask); 538 if ((ret_ga = getaddrinfo(src_node_kill[1], NULL, NULL, 539 &res[1]))) { 540 errx(1, "getaddrinfo: %s", 541 gai_strerror(ret_ga)); 542 /* NOTREACHED */ 543 } 544 for (resp[1] = res[1]; resp[1]; 545 resp[1] = resp[1]->ai_next) { 546 if (resp[1]->ai_addr == NULL) 547 continue; 548 if (psnk.psnk_af != resp[1]->ai_family) 549 continue; 550 551 if (memcmp(&last_dst, resp[1]->ai_addr, 552 sizeof(last_dst)) == 0) 553 continue; 554 last_dst = *(struct sockaddr *)resp[1]->ai_addr; 555 556 dests++; 557 558 if (psnk.psnk_af == AF_INET) 559 psnk.psnk_dst.addr.v.a.addr.v4 = 560 ((struct sockaddr_in *)resp[1]-> 561 ai_addr)->sin_addr; 562 else if (psnk.psnk_af == AF_INET6) 563 psnk.psnk_dst.addr.v.a.addr.v6 = 564 ((struct sockaddr_in6 *)resp[1]-> 565 ai_addr)->sin6_addr; 566 else 567 errx(1, "Unknown address family %d", 568 psnk.psnk_af); 569 570 if (ioctl(dev, DIOCKILLSRCNODES, &psnk)) 571 err(1, "DIOCKILLSRCNODES"); 572 killed += psnk.psnk_killed; 573 } 574 freeaddrinfo(res[1]); 575 } else { 576 if (ioctl(dev, DIOCKILLSRCNODES, &psnk)) 577 err(1, "DIOCKILLSRCNODES"); 578 killed += psnk.psnk_killed; 579 } 580 } 581 582 freeaddrinfo(res[0]); 583 584 if ((opts & PF_OPT_QUIET) == 0) 585 fprintf(stderr, "killed %d src nodes from %d sources and %d " 586 "destinations\n", killed, sources, dests); 587 return (0); 588} 589 590int 591pfctl_net_kill_states(int dev, const char *iface, int opts) 592{ 593 struct pfioc_state_kill psk; 594 struct addrinfo *res[2], *resp[2]; 595 struct sockaddr last_src, last_dst; 596 int killed, sources, dests; 597 int ret_ga; 598 599 killed = sources = dests = 0; 600 601 memset(&psk, 0, sizeof(psk)); 602 memset(&psk.psk_src.addr.v.a.mask, 0xff, 603 sizeof(psk.psk_src.addr.v.a.mask)); 604 memset(&last_src, 0xff, sizeof(last_src)); 605 memset(&last_dst, 0xff, sizeof(last_dst)); 606 if (iface != NULL && strlcpy(psk.psk_ifname, iface, 607 sizeof(psk.psk_ifname)) >= sizeof(psk.psk_ifname)) 608 errx(1, "invalid interface: %s", iface); 609 610 pfctl_addrprefix(state_kill[0], &psk.psk_src.addr.v.a.mask); 611 612 if ((ret_ga = getaddrinfo(state_kill[0], NULL, NULL, &res[0]))) { 613 errx(1, "getaddrinfo: %s", gai_strerror(ret_ga)); 614 /* NOTREACHED */ 615 } 616 for (resp[0] = res[0]; resp[0]; resp[0] = resp[0]->ai_next) { 617 if (resp[0]->ai_addr == NULL) 618 continue; 619 /* We get lots of duplicates. Catch the easy ones */ 620 if (memcmp(&last_src, resp[0]->ai_addr, sizeof(last_src)) == 0) 621 continue; 622 last_src = *(struct sockaddr *)resp[0]->ai_addr; 623 624 psk.psk_af = resp[0]->ai_family; 625 sources++; 626 627 if (psk.psk_af == AF_INET) 628 psk.psk_src.addr.v.a.addr.v4 = 629 ((struct sockaddr_in *)resp[0]->ai_addr)->sin_addr; 630 else if (psk.psk_af == AF_INET6) 631 psk.psk_src.addr.v.a.addr.v6 = 632 ((struct sockaddr_in6 *)resp[0]->ai_addr)-> 633 sin6_addr; 634 else 635 errx(1, "Unknown address family %d", psk.psk_af); 636 637 if (state_killers > 1) { 638 dests = 0; 639 memset(&psk.psk_dst.addr.v.a.mask, 0xff, 640 sizeof(psk.psk_dst.addr.v.a.mask)); 641 memset(&last_dst, 0xff, sizeof(last_dst)); 642 pfctl_addrprefix(state_kill[1], 643 &psk.psk_dst.addr.v.a.mask); 644 if ((ret_ga = getaddrinfo(state_kill[1], NULL, NULL, 645 &res[1]))) { 646 errx(1, "getaddrinfo: %s", 647 gai_strerror(ret_ga)); 648 /* NOTREACHED */ 649 } 650 for (resp[1] = res[1]; resp[1]; 651 resp[1] = resp[1]->ai_next) { 652 if (resp[1]->ai_addr == NULL) 653 continue; 654 if (psk.psk_af != resp[1]->ai_family) 655 continue; 656 657 if (memcmp(&last_dst, resp[1]->ai_addr, 658 sizeof(last_dst)) == 0) 659 continue; 660 last_dst = *(struct sockaddr *)resp[1]->ai_addr; 661 662 dests++; 663 664 if (psk.psk_af == AF_INET) 665 psk.psk_dst.addr.v.a.addr.v4 = 666 ((struct sockaddr_in *)resp[1]-> 667 ai_addr)->sin_addr; 668 else if (psk.psk_af == AF_INET6) 669 psk.psk_dst.addr.v.a.addr.v6 = 670 ((struct sockaddr_in6 *)resp[1]-> 671 ai_addr)->sin6_addr; 672 else 673 errx(1, "Unknown address family %d", 674 psk.psk_af); 675 676 if (ioctl(dev, DIOCKILLSTATES, &psk)) 677 err(1, "DIOCKILLSTATES"); 678 killed += psk.psk_killed; 679 } 680 freeaddrinfo(res[1]); 681 } else { 682 if (ioctl(dev, DIOCKILLSTATES, &psk)) 683 err(1, "DIOCKILLSTATES"); 684 killed += psk.psk_killed; 685 } 686 } 687 688 freeaddrinfo(res[0]); 689 690 if ((opts & PF_OPT_QUIET) == 0) 691 fprintf(stderr, "killed %d states from %d sources and %d " 692 "destinations\n", killed, sources, dests); 693 return (0); 694} 695 696int 697pfctl_label_kill_states(int dev, const char *iface, int opts) 698{ 699 struct pfioc_state_kill psk; 700 701 if (state_killers != 2 || (strlen(state_kill[1]) == 0)) { 702 warnx("no label specified"); 703 usage(); 704 } 705 memset(&psk, 0, sizeof(psk)); 706 if (iface != NULL && strlcpy(psk.psk_ifname, iface, 707 sizeof(psk.psk_ifname)) >= sizeof(psk.psk_ifname)) 708 errx(1, "invalid interface: %s", iface); 709 710 if (strlcpy(psk.psk_label, state_kill[1], sizeof(psk.psk_label)) >= 711 sizeof(psk.psk_label)) 712 errx(1, "label too long: %s", state_kill[1]); 713 714 if (ioctl(dev, DIOCKILLSTATES, &psk)) 715 err(1, "DIOCKILLSTATES"); 716 717 if ((opts & PF_OPT_QUIET) == 0) 718 fprintf(stderr, "killed %d states\n", psk.psk_killed); 719 720 return (0); 721} 722 723int 724pfctl_id_kill_states(int dev, const char *iface, int opts) 725{ 726 struct pfioc_state_kill psk; 727 728 if (state_killers != 2 || (strlen(state_kill[1]) == 0)) { 729 warnx("no id specified"); 730 usage(); 731 } 732 733 memset(&psk, 0, sizeof(psk)); 734 if ((sscanf(state_kill[1], "%jx/%x", 735 &psk.psk_pfcmp.id, &psk.psk_pfcmp.creatorid)) == 2) 736 HTONL(psk.psk_pfcmp.creatorid); 737 else if ((sscanf(state_kill[1], "%jx", &psk.psk_pfcmp.id)) == 1) { 738 psk.psk_pfcmp.creatorid = 0; 739 } else { 740 warnx("wrong id format specified"); 741 usage(); 742 } 743 if (psk.psk_pfcmp.id == 0) { 744 warnx("cannot kill id 0"); 745 usage(); 746 } 747 748 psk.psk_pfcmp.id = htobe64(psk.psk_pfcmp.id); 749 if (ioctl(dev, DIOCKILLSTATES, &psk)) 750 err(1, "DIOCKILLSTATES"); 751 752 if ((opts & PF_OPT_QUIET) == 0) 753 fprintf(stderr, "killed %d states\n", psk.psk_killed); 754 755 return (0); 756} 757 758int 759pfctl_get_pool(int dev, struct pf_pool *pool, u_int32_t nr, 760 u_int32_t ticket, int r_action, char *anchorname) 761{ 762 struct pfioc_pooladdr pp; 763 struct pf_pooladdr *pa; 764 u_int32_t pnr, mpnr; 765 766 memset(&pp, 0, sizeof(pp)); 767 memcpy(pp.anchor, anchorname, sizeof(pp.anchor)); 768 pp.r_action = r_action; 769 pp.r_num = nr; 770 pp.ticket = ticket; 771 if (ioctl(dev, DIOCGETADDRS, &pp)) { 772 warn("DIOCGETADDRS"); 773 return (-1); 774 } 775 mpnr = pp.nr; 776 TAILQ_INIT(&pool->list); 777 for (pnr = 0; pnr < mpnr; ++pnr) { 778 pp.nr = pnr; 779 if (ioctl(dev, DIOCGETADDR, &pp)) { 780 warn("DIOCGETADDR"); 781 return (-1); 782 } 783 pa = calloc(1, sizeof(struct pf_pooladdr)); 784 if (pa == NULL) 785 err(1, "calloc"); 786 bcopy(&pp.addr, pa, sizeof(struct pf_pooladdr)); 787 TAILQ_INSERT_TAIL(&pool->list, pa, entries); 788 } 789 790 return (0); 791} 792 793void 794pfctl_move_pool(struct pf_pool *src, struct pf_pool *dst) 795{ 796 struct pf_pooladdr *pa; 797 798 while ((pa = TAILQ_FIRST(&src->list)) != NULL) { 799 TAILQ_REMOVE(&src->list, pa, entries); 800 TAILQ_INSERT_TAIL(&dst->list, pa, entries); 801 } 802} 803 804void 805pfctl_clear_pool(struct pf_pool *pool) 806{ 807 struct pf_pooladdr *pa; 808 809 while ((pa = TAILQ_FIRST(&pool->list)) != NULL) { 810 TAILQ_REMOVE(&pool->list, pa, entries); 811 free(pa); 812 } 813} 814 815void 816pfctl_print_rule_counters(struct pf_rule *rule, int opts) 817{ 818 if (opts & PF_OPT_DEBUG) { 819 const char *t[PF_SKIP_COUNT] = { "i", "d", "f", 820 "p", "sa", "sp", "da", "dp" }; 821 int i; 822 823 printf(" [ Skip steps: "); 824 for (i = 0; i < PF_SKIP_COUNT; ++i) { 825 if (rule->skip[i].nr == rule->nr + 1) 826 continue; 827 printf("%s=", t[i]); 828 if (rule->skip[i].nr == -1) 829 printf("end "); 830 else 831 printf("%u ", rule->skip[i].nr); 832 } 833 printf("]\n"); 834 835 printf(" [ queue: qname=%s qid=%u pqname=%s pqid=%u ]\n", 836 rule->qname, rule->qid, rule->pqname, rule->pqid); 837 } 838 if (opts & PF_OPT_VERBOSE) { 839 printf(" [ Evaluations: %-8llu Packets: %-8llu " 840 "Bytes: %-10llu States: %-6ju]\n", 841 (unsigned long long)rule->evaluations, 842 (unsigned long long)(rule->packets[0] + 843 rule->packets[1]), 844 (unsigned long long)(rule->bytes[0] + 845 rule->bytes[1]), (uintmax_t)rule->u_states_cur); 846 if (!(opts & PF_OPT_DEBUG)) 847 printf(" [ Inserted: uid %u pid %u " 848 "State Creations: %-6ju]\n", 849 (unsigned)rule->cuid, (unsigned)rule->cpid, 850 (uintmax_t)rule->u_states_tot); 851 } 852} 853 854void 855pfctl_print_title(char *title) 856{ 857 if (!first_title) 858 printf("\n"); 859 first_title = 0; 860 printf("%s\n", title); 861} 862 863int 864pfctl_show_rules(int dev, char *path, int opts, enum pfctl_show format, 865 char *anchorname, int depth) 866{ 867 struct pfioc_rule pr; 868 u_int32_t nr, mnr, header = 0; 869 int rule_numbers = opts & (PF_OPT_VERBOSE2 | PF_OPT_DEBUG); 870 int numeric = opts & PF_OPT_NUMERIC; 871 int len = strlen(path); 872 int brace; 873 char *p; 874 875 if (path[0]) 876 snprintf(&path[len], MAXPATHLEN - len, "/%s", anchorname); 877 else 878 snprintf(&path[len], MAXPATHLEN - len, "%s", anchorname); 879 880 memset(&pr, 0, sizeof(pr)); 881 memcpy(pr.anchor, path, sizeof(pr.anchor)); 882 if (opts & PF_OPT_SHOWALL) { 883 pr.rule.action = PF_PASS; 884 if (ioctl(dev, DIOCGETRULES, &pr)) { 885 warn("DIOCGETRULES"); 886 goto error; 887 } 888 header++; 889 } 890 pr.rule.action = PF_SCRUB; 891 if (ioctl(dev, DIOCGETRULES, &pr)) { 892 warn("DIOCGETRULES"); 893 goto error; 894 } 895 if (opts & PF_OPT_SHOWALL) { 896 if (format == PFCTL_SHOW_RULES && (pr.nr > 0 || header)) 897 pfctl_print_title("FILTER RULES:"); 898 else if (format == PFCTL_SHOW_LABELS && labels) 899 pfctl_print_title("LABEL COUNTERS:"); 900 } 901 mnr = pr.nr; 902 if (opts & PF_OPT_CLRRULECTRS) 903 pr.action = PF_GET_CLR_CNTR; 904 905 for (nr = 0; nr < mnr; ++nr) { 906 pr.nr = nr; 907 if (ioctl(dev, DIOCGETRULE, &pr)) { 908 warn("DIOCGETRULE"); 909 goto error; 910 } 911 912 if (pfctl_get_pool(dev, &pr.rule.rpool, 913 nr, pr.ticket, PF_SCRUB, path) != 0) 914 goto error; 915 916 switch (format) { 917 case PFCTL_SHOW_LABELS: 918 break; 919 case PFCTL_SHOW_RULES: 920 if (pr.rule.label[0] && (opts & PF_OPT_SHOWALL)) 921 labels = 1; 922 print_rule(&pr.rule, pr.anchor_call, rule_numbers, numeric); 923 printf("\n"); 924 pfctl_print_rule_counters(&pr.rule, opts); 925 break; 926 case PFCTL_SHOW_NOTHING: 927 break; 928 } 929 pfctl_clear_pool(&pr.rule.rpool); 930 } 931 pr.rule.action = PF_PASS; 932 if (ioctl(dev, DIOCGETRULES, &pr)) { 933 warn("DIOCGETRULES"); 934 goto error; 935 } 936 mnr = pr.nr; 937 for (nr = 0; nr < mnr; ++nr) { 938 pr.nr = nr; 939 if (ioctl(dev, DIOCGETRULE, &pr)) { 940 warn("DIOCGETRULE"); 941 goto error; 942 } 943 944 if (pfctl_get_pool(dev, &pr.rule.rpool, 945 nr, pr.ticket, PF_PASS, path) != 0) 946 goto error; 947 948 switch (format) { 949 case PFCTL_SHOW_LABELS: 950 if (pr.rule.label[0]) { 951 printf("%s %llu %llu %llu %llu" 952 " %llu %llu %llu %ju\n", 953 pr.rule.label, 954 (unsigned long long)pr.rule.evaluations, 955 (unsigned long long)(pr.rule.packets[0] + 956 pr.rule.packets[1]), 957 (unsigned long long)(pr.rule.bytes[0] + 958 pr.rule.bytes[1]), 959 (unsigned long long)pr.rule.packets[0], 960 (unsigned long long)pr.rule.bytes[0], 961 (unsigned long long)pr.rule.packets[1], 962 (unsigned long long)pr.rule.bytes[1], 963 (uintmax_t)pr.rule.u_states_tot); 964 } 965 break; 966 case PFCTL_SHOW_RULES: 967 brace = 0; 968 if (pr.rule.label[0] && (opts & PF_OPT_SHOWALL)) 969 labels = 1; 970 INDENT(depth, !(opts & PF_OPT_VERBOSE)); 971 if (pr.anchor_call[0] && 972 ((((p = strrchr(pr.anchor_call, '_')) != NULL) && 973 ((void *)p == (void *)pr.anchor_call || 974 *(--p) == '/')) || (opts & PF_OPT_RECURSE))) { 975 brace++; 976 if ((p = strrchr(pr.anchor_call, '/')) != 977 NULL) 978 p++; 979 else 980 p = &pr.anchor_call[0]; 981 } else 982 p = &pr.anchor_call[0]; 983 984 print_rule(&pr.rule, p, rule_numbers, numeric); 985 if (brace) 986 printf(" {\n"); 987 else 988 printf("\n"); 989 pfctl_print_rule_counters(&pr.rule, opts); 990 if (brace) { 991 pfctl_show_rules(dev, path, opts, format, 992 p, depth + 1); 993 INDENT(depth, !(opts & PF_OPT_VERBOSE)); 994 printf("}\n"); 995 } 996 break; 997 case PFCTL_SHOW_NOTHING: 998 break; 999 } 1000 pfctl_clear_pool(&pr.rule.rpool); 1001 } 1002 path[len] = '\0'; 1003 return (0); 1004 1005 error: 1006 path[len] = '\0'; 1007 return (-1); 1008} 1009 1010int 1011pfctl_show_nat(int dev, int opts, char *anchorname) 1012{ 1013 struct pfioc_rule pr; 1014 u_int32_t mnr, nr; 1015 static int nattype[3] = { PF_NAT, PF_RDR, PF_BINAT }; 1016 int i, dotitle = opts & PF_OPT_SHOWALL; 1017 1018 memset(&pr, 0, sizeof(pr)); 1019 memcpy(pr.anchor, anchorname, sizeof(pr.anchor)); 1020 for (i = 0; i < 3; i++) { 1021 pr.rule.action = nattype[i]; 1022 if (ioctl(dev, DIOCGETRULES, &pr)) { 1023 warn("DIOCGETRULES"); 1024 return (-1); 1025 } 1026 mnr = pr.nr; 1027 for (nr = 0; nr < mnr; ++nr) { 1028 pr.nr = nr; 1029 if (ioctl(dev, DIOCGETRULE, &pr)) { 1030 warn("DIOCGETRULE"); 1031 return (-1); 1032 } 1033 if (pfctl_get_pool(dev, &pr.rule.rpool, nr, 1034 pr.ticket, nattype[i], anchorname) != 0) 1035 return (-1); 1036 if (dotitle) { 1037 pfctl_print_title("TRANSLATION RULES:"); 1038 dotitle = 0; 1039 } 1040 print_rule(&pr.rule, pr.anchor_call, 1041 opts & PF_OPT_VERBOSE2, opts & PF_OPT_NUMERIC); 1042 printf("\n"); 1043 pfctl_print_rule_counters(&pr.rule, opts); 1044 pfctl_clear_pool(&pr.rule.rpool); 1045 } 1046 } 1047 return (0); 1048} 1049 1050int 1051pfctl_show_src_nodes(int dev, int opts) 1052{ 1053 struct pfioc_src_nodes psn; 1054 struct pf_src_node *p; 1055 char *inbuf = NULL, *newinbuf = NULL; 1056 unsigned int len = 0; 1057 int i; 1058 1059 memset(&psn, 0, sizeof(psn)); 1060 for (;;) { 1061 psn.psn_len = len; 1062 if (len) { 1063 newinbuf = realloc(inbuf, len); 1064 if (newinbuf == NULL) 1065 err(1, "realloc"); 1066 psn.psn_buf = inbuf = newinbuf; 1067 } 1068 if (ioctl(dev, DIOCGETSRCNODES, &psn) < 0) { 1069 warn("DIOCGETSRCNODES"); 1070 free(inbuf); 1071 return (-1); 1072 } 1073 if (psn.psn_len + sizeof(struct pfioc_src_nodes) < len) 1074 break; 1075 if (len == 0 && psn.psn_len == 0) 1076 goto done; 1077 if (len == 0 && psn.psn_len != 0) 1078 len = psn.psn_len; 1079 if (psn.psn_len == 0) 1080 goto done; /* no src_nodes */ 1081 len *= 2; 1082 } 1083 p = psn.psn_src_nodes; 1084 if (psn.psn_len > 0 && (opts & PF_OPT_SHOWALL)) 1085 pfctl_print_title("SOURCE TRACKING NODES:"); 1086 for (i = 0; i < psn.psn_len; i += sizeof(*p)) { 1087 print_src_node(p, opts); 1088 p++; 1089 } 1090done: 1091 free(inbuf); 1092 return (0); 1093} 1094 1095int 1096pfctl_show_states(int dev, const char *iface, int opts) 1097{ 1098 struct pfioc_states ps; 1099 struct pfsync_state *p; 1100 char *inbuf = NULL, *newinbuf = NULL; 1101 unsigned int len = 0; 1102 int i, dotitle = (opts & PF_OPT_SHOWALL); 1103 1104 memset(&ps, 0, sizeof(ps)); 1105 for (;;) { 1106 ps.ps_len = len; 1107 if (len) { 1108 newinbuf = realloc(inbuf, len); 1109 if (newinbuf == NULL) 1110 err(1, "realloc"); 1111 ps.ps_buf = inbuf = newinbuf; 1112 } 1113 if (ioctl(dev, DIOCGETSTATES, &ps) < 0) { 1114 warn("DIOCGETSTATES"); 1115 free(inbuf); 1116 return (-1); 1117 } 1118 if (ps.ps_len + sizeof(struct pfioc_states) < len) 1119 break; 1120 if (len == 0 && ps.ps_len == 0) 1121 goto done; 1122 if (len == 0 && ps.ps_len != 0) 1123 len = ps.ps_len; 1124 if (ps.ps_len == 0) 1125 goto done; /* no states */ 1126 len *= 2; 1127 } 1128 p = ps.ps_states; 1129 for (i = 0; i < ps.ps_len; i += sizeof(*p), p++) { 1130 if (iface != NULL && strcmp(p->ifname, iface)) 1131 continue; 1132 if (dotitle) { 1133 pfctl_print_title("STATES:"); 1134 dotitle = 0; 1135 } 1136 print_state(p, opts); 1137 } 1138done: 1139 free(inbuf); 1140 return (0); 1141} 1142 1143int 1144pfctl_show_status(int dev, int opts) 1145{ 1146 struct pf_status status; 1147 1148 if (ioctl(dev, DIOCGETSTATUS, &status)) { 1149 warn("DIOCGETSTATUS"); 1150 return (-1); 1151 } 1152 if (opts & PF_OPT_SHOWALL) 1153 pfctl_print_title("INFO:"); 1154 print_status(&status, opts); 1155 return (0); 1156} 1157 1158int 1159pfctl_show_running(int dev) 1160{ 1161 struct pf_status status; 1162 1163 if (ioctl(dev, DIOCGETSTATUS, &status)) { 1164 warn("DIOCGETSTATUS"); 1165 return (-1); 1166 } 1167 1168 print_running(&status); 1169 return (!status.running); 1170} 1171 1172int 1173pfctl_show_timeouts(int dev, int opts) 1174{ 1175 struct pfioc_tm pt; 1176 int i; 1177 1178 if (opts & PF_OPT_SHOWALL) 1179 pfctl_print_title("TIMEOUTS:"); 1180 memset(&pt, 0, sizeof(pt)); 1181 for (i = 0; pf_timeouts[i].name; i++) { 1182 pt.timeout = pf_timeouts[i].timeout; 1183 if (ioctl(dev, DIOCGETTIMEOUT, &pt)) 1184 err(1, "DIOCGETTIMEOUT"); 1185 printf("%-20s %10d", pf_timeouts[i].name, pt.seconds); 1186 if (pf_timeouts[i].timeout >= PFTM_ADAPTIVE_START && 1187 pf_timeouts[i].timeout <= PFTM_ADAPTIVE_END) 1188 printf(" states"); 1189 else 1190 printf("s"); 1191 printf("\n"); 1192 } 1193 return (0); 1194 1195} 1196 1197int 1198pfctl_show_limits(int dev, int opts) 1199{ 1200 struct pfioc_limit pl; 1201 int i; 1202 1203 if (opts & PF_OPT_SHOWALL) 1204 pfctl_print_title("LIMITS:"); 1205 memset(&pl, 0, sizeof(pl)); 1206 for (i = 0; pf_limits[i].name; i++) { 1207 pl.index = pf_limits[i].index; 1208 if (ioctl(dev, DIOCGETLIMIT, &pl)) 1209 err(1, "DIOCGETLIMIT"); 1210 printf("%-13s ", pf_limits[i].name); 1211 if (pl.limit == UINT_MAX) 1212 printf("unlimited\n"); 1213 else 1214 printf("hard limit %8u\n", pl.limit); 1215 } 1216 return (0); 1217} 1218 1219/* callbacks for rule/nat/rdr/addr */ 1220int 1221pfctl_add_pool(struct pfctl *pf, struct pf_pool *p, sa_family_t af) 1222{ 1223 struct pf_pooladdr *pa; 1224 1225 if ((pf->opts & PF_OPT_NOACTION) == 0) { 1226 if (ioctl(pf->dev, DIOCBEGINADDRS, &pf->paddr)) 1227 err(1, "DIOCBEGINADDRS"); 1228 } 1229 1230 pf->paddr.af = af; 1231 TAILQ_FOREACH(pa, &p->list, entries) { 1232 memcpy(&pf->paddr.addr, pa, sizeof(struct pf_pooladdr)); 1233 if ((pf->opts & PF_OPT_NOACTION) == 0) { 1234 if (ioctl(pf->dev, DIOCADDADDR, &pf->paddr)) 1235 err(1, "DIOCADDADDR"); 1236 } 1237 } 1238 return (0); 1239} 1240 1241int 1242pfctl_add_rule(struct pfctl *pf, struct pf_rule *r, const char *anchor_call) 1243{ 1244 u_int8_t rs_num; 1245 struct pf_rule *rule; 1246 struct pf_ruleset *rs; 1247 char *p; 1248 1249 rs_num = pf_get_ruleset_number(r->action); 1250 if (rs_num == PF_RULESET_MAX) 1251 errx(1, "Invalid rule type %d", r->action); 1252 1253 rs = &pf->anchor->ruleset; 1254 1255 if (anchor_call[0] && r->anchor == NULL) { 1256 /* 1257 * Don't make non-brace anchors part of the main anchor pool. 1258 */ 1259 if ((r->anchor = calloc(1, sizeof(*r->anchor))) == NULL) 1260 err(1, "pfctl_add_rule: calloc"); 1261 1262 pf_init_ruleset(&r->anchor->ruleset); 1263 r->anchor->ruleset.anchor = r->anchor; 1264 if (strlcpy(r->anchor->path, anchor_call, 1265 sizeof(rule->anchor->path)) >= sizeof(rule->anchor->path)) 1266 errx(1, "pfctl_add_rule: strlcpy"); 1267 if ((p = strrchr(anchor_call, '/')) != NULL) { 1268 if (!strlen(p)) 1269 err(1, "pfctl_add_rule: bad anchor name %s", 1270 anchor_call); 1271 } else 1272 p = (char *)anchor_call; 1273 if (strlcpy(r->anchor->name, p, 1274 sizeof(rule->anchor->name)) >= sizeof(rule->anchor->name)) 1275 errx(1, "pfctl_add_rule: strlcpy"); 1276 } 1277 1278 if ((rule = calloc(1, sizeof(*rule))) == NULL) 1279 err(1, "calloc"); 1280 bcopy(r, rule, sizeof(*rule)); 1281 TAILQ_INIT(&rule->rpool.list); 1282 pfctl_move_pool(&r->rpool, &rule->rpool); 1283 1284 TAILQ_INSERT_TAIL(rs->rules[rs_num].active.ptr, rule, entries); 1285 return (0); 1286} 1287 1288int 1289pfctl_ruleset_trans(struct pfctl *pf, char *path, struct pf_anchor *a) 1290{ 1291 int osize = pf->trans->pfrb_size; 1292 1293 if ((pf->loadopt & PFCTL_FLAG_NAT) != 0) { 1294 if (pfctl_add_trans(pf->trans, PF_RULESET_NAT, path) || 1295 pfctl_add_trans(pf->trans, PF_RULESET_BINAT, path) || 1296 pfctl_add_trans(pf->trans, PF_RULESET_RDR, path)) 1297 return (1); 1298 } 1299 if (a == pf->astack[0] && ((altqsupport && 1300 (pf->loadopt & PFCTL_FLAG_ALTQ) != 0))) { 1301 if (pfctl_add_trans(pf->trans, PF_RULESET_ALTQ, path)) 1302 return (2); 1303 } 1304 if ((pf->loadopt & PFCTL_FLAG_FILTER) != 0) { 1305 if (pfctl_add_trans(pf->trans, PF_RULESET_SCRUB, path) || 1306 pfctl_add_trans(pf->trans, PF_RULESET_FILTER, path)) 1307 return (3); 1308 } 1309 if (pf->loadopt & PFCTL_FLAG_TABLE) 1310 if (pfctl_add_trans(pf->trans, PF_RULESET_TABLE, path)) 1311 return (4); 1312 if (pfctl_trans(pf->dev, pf->trans, DIOCXBEGIN, osize)) 1313 return (5); 1314 1315 return (0); 1316} 1317 1318int 1319pfctl_load_ruleset(struct pfctl *pf, char *path, struct pf_ruleset *rs, 1320 int rs_num, int depth) 1321{ 1322 struct pf_rule *r; 1323 int error, len = strlen(path); 1324 int brace = 0; 1325 1326 pf->anchor = rs->anchor; 1327 1328 if (path[0]) 1329 snprintf(&path[len], MAXPATHLEN - len, "/%s", pf->anchor->name); 1330 else 1331 snprintf(&path[len], MAXPATHLEN - len, "%s", pf->anchor->name); 1332 1333 if (depth) { 1334 if (TAILQ_FIRST(rs->rules[rs_num].active.ptr) != NULL) { 1335 brace++; 1336 if (pf->opts & PF_OPT_VERBOSE) 1337 printf(" {\n"); 1338 if ((pf->opts & PF_OPT_NOACTION) == 0 && 1339 (error = pfctl_ruleset_trans(pf, 1340 path, rs->anchor))) { 1341 printf("pfctl_load_rulesets: " 1342 "pfctl_ruleset_trans %d\n", error); 1343 goto error; 1344 } 1345 } else if (pf->opts & PF_OPT_VERBOSE) 1346 printf("\n"); 1347 1348 } 1349 1350 if (pf->optimize && rs_num == PF_RULESET_FILTER) 1351 pfctl_optimize_ruleset(pf, rs); 1352 1353 while ((r = TAILQ_FIRST(rs->rules[rs_num].active.ptr)) != NULL) { 1354 TAILQ_REMOVE(rs->rules[rs_num].active.ptr, r, entries); 1355 if ((error = pfctl_load_rule(pf, path, r, depth))) 1356 goto error; 1357 if (r->anchor) { 1358 if ((error = pfctl_load_ruleset(pf, path, 1359 &r->anchor->ruleset, rs_num, depth + 1))) 1360 goto error; 1361 } else if (pf->opts & PF_OPT_VERBOSE) 1362 printf("\n"); 1363 free(r); 1364 } 1365 if (brace && pf->opts & PF_OPT_VERBOSE) { 1366 INDENT(depth - 1, (pf->opts & PF_OPT_VERBOSE)); 1367 printf("}\n"); 1368 } 1369 path[len] = '\0'; 1370 return (0); 1371 1372 error: 1373 path[len] = '\0'; 1374 return (error); 1375 1376} 1377 1378int 1379pfctl_load_rule(struct pfctl *pf, char *path, struct pf_rule *r, int depth) 1380{ 1381 u_int8_t rs_num = pf_get_ruleset_number(r->action); 1382 char *name; 1383 struct pfioc_rule pr; 1384 int len = strlen(path); 1385 1386 bzero(&pr, sizeof(pr)); 1387 /* set up anchor before adding to path for anchor_call */ 1388 if ((pf->opts & PF_OPT_NOACTION) == 0) 1389 pr.ticket = pfctl_get_ticket(pf->trans, rs_num, path); 1390 if (strlcpy(pr.anchor, path, sizeof(pr.anchor)) >= sizeof(pr.anchor)) 1391 errx(1, "pfctl_load_rule: strlcpy"); 1392 1393 if (r->anchor) { 1394 if (r->anchor->match) { 1395 if (path[0]) 1396 snprintf(&path[len], MAXPATHLEN - len, 1397 "/%s", r->anchor->name); 1398 else 1399 snprintf(&path[len], MAXPATHLEN - len, 1400 "%s", r->anchor->name); 1401 name = path; 1402 } else 1403 name = r->anchor->path; 1404 } else 1405 name = ""; 1406 1407 if ((pf->opts & PF_OPT_NOACTION) == 0) { 1408 if (pfctl_add_pool(pf, &r->rpool, r->af)) 1409 return (1); 1410 pr.pool_ticket = pf->paddr.ticket; 1411 memcpy(&pr.rule, r, sizeof(pr.rule)); 1412 if (r->anchor && strlcpy(pr.anchor_call, name, 1413 sizeof(pr.anchor_call)) >= sizeof(pr.anchor_call)) 1414 errx(1, "pfctl_load_rule: strlcpy"); 1415 if (ioctl(pf->dev, DIOCADDRULE, &pr)) 1416 err(1, "DIOCADDRULE"); 1417 } 1418 1419 if (pf->opts & PF_OPT_VERBOSE) { 1420 INDENT(depth, !(pf->opts & PF_OPT_VERBOSE2)); 1421 print_rule(r, r->anchor ? r->anchor->name : "", 1422 pf->opts & PF_OPT_VERBOSE2, 1423 pf->opts & PF_OPT_NUMERIC); 1424 } 1425 path[len] = '\0'; 1426 pfctl_clear_pool(&r->rpool); 1427 return (0); 1428} 1429 1430int 1431pfctl_add_altq(struct pfctl *pf, struct pf_altq *a) 1432{ 1433 if (altqsupport && 1434 (loadopt & PFCTL_FLAG_ALTQ) != 0) { 1435 memcpy(&pf->paltq->altq, a, sizeof(struct pf_altq)); 1436 if ((pf->opts & PF_OPT_NOACTION) == 0) { 1437 if (ioctl(pf->dev, DIOCADDALTQ, pf->paltq)) { 1438 if (errno == ENXIO) 1439 errx(1, "qtype not configured"); 1440 else if (errno == ENODEV) 1441 errx(1, "%s: driver does not support " 1442 "altq", a->ifname); 1443 else 1444 err(1, "DIOCADDALTQ"); 1445 } 1446 } 1447 pfaltq_store(&pf->paltq->altq); 1448 } 1449 return (0); 1450} 1451 1452int 1453pfctl_rules(int dev, char *filename, int opts, int optimize, 1454 char *anchorname, struct pfr_buffer *trans) 1455{ 1456#define ERR(x) do { warn(x); goto _error; } while(0) 1457#define ERRX(x) do { warnx(x); goto _error; } while(0) 1458 1459 struct pfr_buffer *t, buf; 1460 struct pfioc_altq pa; 1461 struct pfctl pf; 1462 struct pf_ruleset *rs; 1463 struct pfr_table trs; 1464 char *path; 1465 int osize; 1466 1467 RB_INIT(&pf_anchors); 1468 memset(&pf_main_anchor, 0, sizeof(pf_main_anchor)); 1469 pf_init_ruleset(&pf_main_anchor.ruleset); 1470 pf_main_anchor.ruleset.anchor = &pf_main_anchor; 1471 if (trans == NULL) { 1472 bzero(&buf, sizeof(buf)); 1473 buf.pfrb_type = PFRB_TRANS; 1474 t = &buf; 1475 osize = 0; 1476 } else { 1477 t = trans; 1478 osize = t->pfrb_size; 1479 } 1480 1481 memset(&pa, 0, sizeof(pa)); 1482 memset(&pf, 0, sizeof(pf)); 1483 memset(&trs, 0, sizeof(trs)); 1484 if ((path = calloc(1, MAXPATHLEN)) == NULL) 1485 ERRX("pfctl_rules: calloc"); 1486 if (strlcpy(trs.pfrt_anchor, anchorname, 1487 sizeof(trs.pfrt_anchor)) >= sizeof(trs.pfrt_anchor)) 1488 ERRX("pfctl_rules: strlcpy"); 1489 pf.dev = dev; 1490 pf.opts = opts; 1491 pf.optimize = optimize; 1492 pf.loadopt = loadopt; 1493 1494 /* non-brace anchor, create without resolving the path */ 1495 if ((pf.anchor = calloc(1, sizeof(*pf.anchor))) == NULL) 1496 ERRX("pfctl_rules: calloc"); 1497 rs = &pf.anchor->ruleset; 1498 pf_init_ruleset(rs); 1499 rs->anchor = pf.anchor; 1500 if (strlcpy(pf.anchor->path, anchorname, 1501 sizeof(pf.anchor->path)) >= sizeof(pf.anchor->path)) 1502 errx(1, "pfctl_add_rule: strlcpy"); 1503 if (strlcpy(pf.anchor->name, anchorname, 1504 sizeof(pf.anchor->name)) >= sizeof(pf.anchor->name)) 1505 errx(1, "pfctl_add_rule: strlcpy"); 1506 1507 1508 pf.astack[0] = pf.anchor; 1509 pf.asd = 0; 1510 if (anchorname[0]) 1511 pf.loadopt &= ~PFCTL_FLAG_ALTQ; 1512 pf.paltq = &pa; 1513 pf.trans = t; 1514 pfctl_init_options(&pf); 1515 1516 if ((opts & PF_OPT_NOACTION) == 0) { 1517 /* 1518 * XXX For the time being we need to open transactions for 1519 * the main ruleset before parsing, because tables are still 1520 * loaded at parse time. 1521 */ 1522 if (pfctl_ruleset_trans(&pf, anchorname, pf.anchor)) 1523 ERRX("pfctl_rules"); 1524 if (altqsupport && (pf.loadopt & PFCTL_FLAG_ALTQ)) 1525 pa.ticket = 1526 pfctl_get_ticket(t, PF_RULESET_ALTQ, anchorname); 1527 if (pf.loadopt & PFCTL_FLAG_TABLE) 1528 pf.astack[0]->ruleset.tticket = 1529 pfctl_get_ticket(t, PF_RULESET_TABLE, anchorname); 1530 } 1531 1532 if (parse_config(filename, &pf) < 0) { 1533 if ((opts & PF_OPT_NOACTION) == 0) 1534 ERRX("Syntax error in config file: " 1535 "pf rules not loaded"); 1536 else 1537 goto _error; 1538 } 1539 if (loadopt & PFCTL_FLAG_OPTION) 1540 pfctl_clear_skip_ifaces(&pf); 1541 1542 if ((pf.loadopt & PFCTL_FLAG_FILTER && 1543 (pfctl_load_ruleset(&pf, path, rs, PF_RULESET_SCRUB, 0))) || 1544 (pf.loadopt & PFCTL_FLAG_NAT && 1545 (pfctl_load_ruleset(&pf, path, rs, PF_RULESET_NAT, 0) || 1546 pfctl_load_ruleset(&pf, path, rs, PF_RULESET_RDR, 0) || 1547 pfctl_load_ruleset(&pf, path, rs, PF_RULESET_BINAT, 0))) || 1548 (pf.loadopt & PFCTL_FLAG_FILTER && 1549 pfctl_load_ruleset(&pf, path, rs, PF_RULESET_FILTER, 0))) { 1550 if ((opts & PF_OPT_NOACTION) == 0) 1551 ERRX("Unable to load rules into kernel"); 1552 else 1553 goto _error; 1554 } 1555 1556 if ((altqsupport && (pf.loadopt & PFCTL_FLAG_ALTQ) != 0)) 1557 if (check_commit_altq(dev, opts) != 0) 1558 ERRX("errors in altq config"); 1559 1560 /* process "load anchor" directives */ 1561 if (!anchorname[0]) 1562 if (pfctl_load_anchors(dev, &pf, t) == -1) 1563 ERRX("load anchors"); 1564 1565 if (trans == NULL && (opts & PF_OPT_NOACTION) == 0) { 1566 if (!anchorname[0]) 1567 if (pfctl_load_options(&pf)) 1568 goto _error; 1569 if (pfctl_trans(dev, t, DIOCXCOMMIT, osize)) 1570 ERR("DIOCXCOMMIT"); 1571 } 1572 return (0); 1573 1574_error: 1575 if (trans == NULL) { /* main ruleset */ 1576 if ((opts & PF_OPT_NOACTION) == 0) 1577 if (pfctl_trans(dev, t, DIOCXROLLBACK, osize)) 1578 err(1, "DIOCXROLLBACK"); 1579 exit(1); 1580 } else { /* sub ruleset */ 1581 return (-1); 1582 } 1583 1584#undef ERR 1585#undef ERRX 1586} 1587 1588FILE * 1589pfctl_fopen(const char *name, const char *mode) 1590{ 1591 struct stat st; 1592 FILE *fp; 1593 1594 fp = fopen(name, mode); 1595 if (fp == NULL) 1596 return (NULL); 1597 if (fstat(fileno(fp), &st)) { 1598 fclose(fp); 1599 return (NULL); 1600 } 1601 if (S_ISDIR(st.st_mode)) { 1602 fclose(fp); 1603 errno = EISDIR; 1604 return (NULL); 1605 } 1606 return (fp); 1607} 1608 1609void 1610pfctl_init_options(struct pfctl *pf) 1611{ 1612 1613 pf->timeout[PFTM_TCP_FIRST_PACKET] = PFTM_TCP_FIRST_PACKET_VAL; 1614 pf->timeout[PFTM_TCP_OPENING] = PFTM_TCP_OPENING_VAL; 1615 pf->timeout[PFTM_TCP_ESTABLISHED] = PFTM_TCP_ESTABLISHED_VAL; 1616 pf->timeout[PFTM_TCP_CLOSING] = PFTM_TCP_CLOSING_VAL; 1617 pf->timeout[PFTM_TCP_FIN_WAIT] = PFTM_TCP_FIN_WAIT_VAL; 1618 pf->timeout[PFTM_TCP_CLOSED] = PFTM_TCP_CLOSED_VAL; 1619 pf->timeout[PFTM_UDP_FIRST_PACKET] = PFTM_UDP_FIRST_PACKET_VAL; 1620 pf->timeout[PFTM_UDP_SINGLE] = PFTM_UDP_SINGLE_VAL; 1621 pf->timeout[PFTM_UDP_MULTIPLE] = PFTM_UDP_MULTIPLE_VAL; 1622 pf->timeout[PFTM_ICMP_FIRST_PACKET] = PFTM_ICMP_FIRST_PACKET_VAL; 1623 pf->timeout[PFTM_ICMP_ERROR_REPLY] = PFTM_ICMP_ERROR_REPLY_VAL; 1624 pf->timeout[PFTM_OTHER_FIRST_PACKET] = PFTM_OTHER_FIRST_PACKET_VAL; 1625 pf->timeout[PFTM_OTHER_SINGLE] = PFTM_OTHER_SINGLE_VAL; 1626 pf->timeout[PFTM_OTHER_MULTIPLE] = PFTM_OTHER_MULTIPLE_VAL; 1627 pf->timeout[PFTM_FRAG] = PFTM_FRAG_VAL; 1628 pf->timeout[PFTM_INTERVAL] = PFTM_INTERVAL_VAL; 1629 pf->timeout[PFTM_SRC_NODE] = PFTM_SRC_NODE_VAL; 1630 pf->timeout[PFTM_TS_DIFF] = PFTM_TS_DIFF_VAL; 1631 pf->timeout[PFTM_ADAPTIVE_START] = PFSTATE_ADAPT_START; 1632 pf->timeout[PFTM_ADAPTIVE_END] = PFSTATE_ADAPT_END; 1633 1634 pf->limit[PF_LIMIT_STATES] = PFSTATE_HIWAT; 1635 pf->limit[PF_LIMIT_FRAGS] = PFFRAG_FRENT_HIWAT; 1636 pf->limit[PF_LIMIT_SRC_NODES] = PFSNODE_HIWAT; 1637 pf->limit[PF_LIMIT_TABLE_ENTRIES] = PFR_KENTRY_HIWAT; 1638 1639 pf->debug = PF_DEBUG_URGENT; 1640} 1641 1642int 1643pfctl_load_options(struct pfctl *pf) 1644{ 1645 int i, error = 0; 1646 1647 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1648 return (0); 1649 1650 /* load limits */ 1651 for (i = 0; i < PF_LIMIT_MAX; i++) { 1652 if ((pf->opts & PF_OPT_MERGE) && !pf->limit_set[i]) 1653 continue; 1654 if (pfctl_load_limit(pf, i, pf->limit[i])) 1655 error = 1; 1656 } 1657 1658 /* 1659 * If we've set the limit, but haven't explicitly set adaptive 1660 * timeouts, do it now with a start of 60% and end of 120%. 1661 */ 1662 if (pf->limit_set[PF_LIMIT_STATES] && 1663 !pf->timeout_set[PFTM_ADAPTIVE_START] && 1664 !pf->timeout_set[PFTM_ADAPTIVE_END]) { 1665 pf->timeout[PFTM_ADAPTIVE_START] = 1666 (pf->limit[PF_LIMIT_STATES] / 10) * 6; 1667 pf->timeout_set[PFTM_ADAPTIVE_START] = 1; 1668 pf->timeout[PFTM_ADAPTIVE_END] = 1669 (pf->limit[PF_LIMIT_STATES] / 10) * 12; 1670 pf->timeout_set[PFTM_ADAPTIVE_END] = 1; 1671 } 1672 1673 /* load timeouts */ 1674 for (i = 0; i < PFTM_MAX; i++) { 1675 if ((pf->opts & PF_OPT_MERGE) && !pf->timeout_set[i]) 1676 continue; 1677 if (pfctl_load_timeout(pf, i, pf->timeout[i])) 1678 error = 1; 1679 } 1680 1681 /* load debug */ 1682 if (!(pf->opts & PF_OPT_MERGE) || pf->debug_set) 1683 if (pfctl_load_debug(pf, pf->debug)) 1684 error = 1; 1685 1686 /* load logif */ 1687 if (!(pf->opts & PF_OPT_MERGE) || pf->ifname_set) 1688 if (pfctl_load_logif(pf, pf->ifname)) 1689 error = 1; 1690 1691 /* load hostid */ 1692 if (!(pf->opts & PF_OPT_MERGE) || pf->hostid_set) 1693 if (pfctl_load_hostid(pf, pf->hostid)) 1694 error = 1; 1695 1696 return (error); 1697} 1698 1699int 1700pfctl_set_limit(struct pfctl *pf, const char *opt, unsigned int limit) 1701{ 1702 int i; 1703 1704 1705 for (i = 0; pf_limits[i].name; i++) { 1706 if (strcasecmp(opt, pf_limits[i].name) == 0) { 1707 pf->limit[pf_limits[i].index] = limit; 1708 pf->limit_set[pf_limits[i].index] = 1; 1709 break; 1710 } 1711 } 1712 if (pf_limits[i].name == NULL) { 1713 warnx("Bad pool name."); 1714 return (1); 1715 } 1716 1717 if (pf->opts & PF_OPT_VERBOSE) 1718 printf("set limit %s %d\n", opt, limit); 1719 1720 return (0); 1721} 1722 1723int 1724pfctl_load_limit(struct pfctl *pf, unsigned int index, unsigned int limit) 1725{ 1726 struct pfioc_limit pl; 1727 1728 memset(&pl, 0, sizeof(pl)); 1729 pl.index = index; 1730 pl.limit = limit; 1731 if (ioctl(pf->dev, DIOCSETLIMIT, &pl)) { 1732 if (errno == EBUSY) 1733 warnx("Current pool size exceeds requested hard limit"); 1734 else 1735 warnx("DIOCSETLIMIT"); 1736 return (1); 1737 } 1738 return (0); 1739} 1740 1741int 1742pfctl_set_timeout(struct pfctl *pf, const char *opt, int seconds, int quiet) 1743{ 1744 int i; 1745 1746 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1747 return (0); 1748 1749 for (i = 0; pf_timeouts[i].name; i++) { 1750 if (strcasecmp(opt, pf_timeouts[i].name) == 0) { 1751 pf->timeout[pf_timeouts[i].timeout] = seconds; 1752 pf->timeout_set[pf_timeouts[i].timeout] = 1; 1753 break; 1754 } 1755 } 1756 1757 if (pf_timeouts[i].name == NULL) { 1758 warnx("Bad timeout name."); 1759 return (1); 1760 } 1761 1762 1763 if (pf->opts & PF_OPT_VERBOSE && ! quiet) 1764 printf("set timeout %s %d\n", opt, seconds); 1765 1766 return (0); 1767} 1768 1769int 1770pfctl_load_timeout(struct pfctl *pf, unsigned int timeout, unsigned int seconds) 1771{ 1772 struct pfioc_tm pt; 1773 1774 memset(&pt, 0, sizeof(pt)); 1775 pt.timeout = timeout; 1776 pt.seconds = seconds; 1777 if (ioctl(pf->dev, DIOCSETTIMEOUT, &pt)) { 1778 warnx("DIOCSETTIMEOUT"); 1779 return (1); 1780 } 1781 return (0); 1782} 1783 1784int 1785pfctl_set_optimization(struct pfctl *pf, const char *opt) 1786{ 1787 const struct pf_hint *hint; 1788 int i, r; 1789 1790 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1791 return (0); 1792 1793 for (i = 0; pf_hints[i].name; i++) 1794 if (strcasecmp(opt, pf_hints[i].name) == 0) 1795 break; 1796 1797 hint = pf_hints[i].hint; 1798 if (hint == NULL) { 1799 warnx("invalid state timeouts optimization"); 1800 return (1); 1801 } 1802 1803 for (i = 0; hint[i].name; i++) 1804 if ((r = pfctl_set_timeout(pf, hint[i].name, 1805 hint[i].timeout, 1))) 1806 return (r); 1807 1808 if (pf->opts & PF_OPT_VERBOSE) 1809 printf("set optimization %s\n", opt); 1810 1811 return (0); 1812} 1813 1814int 1815pfctl_set_logif(struct pfctl *pf, char *ifname) 1816{ 1817 1818 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1819 return (0); 1820 1821 if (!strcmp(ifname, "none")) { 1822 free(pf->ifname); 1823 pf->ifname = NULL; 1824 } else { 1825 pf->ifname = strdup(ifname); 1826 if (!pf->ifname) 1827 errx(1, "pfctl_set_logif: strdup"); 1828 } 1829 pf->ifname_set = 1; 1830 1831 if (pf->opts & PF_OPT_VERBOSE) 1832 printf("set loginterface %s\n", ifname); 1833 1834 return (0); 1835} 1836 1837int 1838pfctl_load_logif(struct pfctl *pf, char *ifname) 1839{ 1840 struct pfioc_if pi; 1841 1842 memset(&pi, 0, sizeof(pi)); 1843 if (ifname && strlcpy(pi.ifname, ifname, 1844 sizeof(pi.ifname)) >= sizeof(pi.ifname)) { 1845 warnx("pfctl_load_logif: strlcpy"); 1846 return (1); 1847 } 1848 if (ioctl(pf->dev, DIOCSETSTATUSIF, &pi)) { 1849 warnx("DIOCSETSTATUSIF"); 1850 return (1); 1851 } 1852 return (0); 1853} 1854 1855int 1856pfctl_set_hostid(struct pfctl *pf, u_int32_t hostid) 1857{ 1858 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1859 return (0); 1860 1861 HTONL(hostid); 1862 1863 pf->hostid = hostid; 1864 pf->hostid_set = 1; 1865 1866 if (pf->opts & PF_OPT_VERBOSE) 1867 printf("set hostid 0x%08x\n", ntohl(hostid)); 1868 1869 return (0); 1870} 1871 1872int 1873pfctl_load_hostid(struct pfctl *pf, u_int32_t hostid) 1874{ 1875 if (ioctl(dev, DIOCSETHOSTID, &hostid)) { 1876 warnx("DIOCSETHOSTID"); 1877 return (1); 1878 } 1879 return (0); 1880} 1881 1882int 1883pfctl_set_debug(struct pfctl *pf, char *d) 1884{ 1885 u_int32_t level; 1886 1887 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1888 return (0); 1889 1890 if (!strcmp(d, "none")) 1891 pf->debug = PF_DEBUG_NONE; 1892 else if (!strcmp(d, "urgent")) 1893 pf->debug = PF_DEBUG_URGENT; 1894 else if (!strcmp(d, "misc")) 1895 pf->debug = PF_DEBUG_MISC; 1896 else if (!strcmp(d, "loud")) 1897 pf->debug = PF_DEBUG_NOISY; 1898 else { 1899 warnx("unknown debug level \"%s\"", d); 1900 return (-1); 1901 } 1902 1903 pf->debug_set = 1; 1904 level = pf->debug; 1905 1906 if ((pf->opts & PF_OPT_NOACTION) == 0) 1907 if (ioctl(dev, DIOCSETDEBUG, &level)) 1908 err(1, "DIOCSETDEBUG"); 1909 1910 if (pf->opts & PF_OPT_VERBOSE) 1911 printf("set debug %s\n", d); 1912 1913 return (0); 1914} 1915 1916int 1917pfctl_load_debug(struct pfctl *pf, unsigned int level) 1918{ 1919 if (ioctl(pf->dev, DIOCSETDEBUG, &level)) { 1920 warnx("DIOCSETDEBUG"); 1921 return (1); 1922 } 1923 return (0); 1924} 1925 1926int 1927pfctl_set_interface_flags(struct pfctl *pf, char *ifname, int flags, int how) 1928{ 1929 struct pfioc_iface pi; 1930 1931 if ((loadopt & PFCTL_FLAG_OPTION) == 0) 1932 return (0); 1933 1934 bzero(&pi, sizeof(pi)); 1935 1936 pi.pfiio_flags = flags; 1937 1938 if (strlcpy(pi.pfiio_name, ifname, sizeof(pi.pfiio_name)) >= 1939 sizeof(pi.pfiio_name)) 1940 errx(1, "pfctl_set_interface_flags: strlcpy"); 1941 1942 if ((pf->opts & PF_OPT_NOACTION) == 0) { 1943 if (how == 0) { 1944 if (ioctl(pf->dev, DIOCCLRIFFLAG, &pi)) 1945 err(1, "DIOCCLRIFFLAG"); 1946 } else { 1947 if (ioctl(pf->dev, DIOCSETIFFLAG, &pi)) 1948 err(1, "DIOCSETIFFLAG"); 1949 pfctl_check_skip_ifaces(ifname); 1950 } 1951 } 1952 return (0); 1953} 1954 1955void 1956pfctl_debug(int dev, u_int32_t level, int opts) 1957{ 1958 if (ioctl(dev, DIOCSETDEBUG, &level)) 1959 err(1, "DIOCSETDEBUG"); 1960 if ((opts & PF_OPT_QUIET) == 0) { 1961 fprintf(stderr, "debug level set to '"); 1962 switch (level) { 1963 case PF_DEBUG_NONE: 1964 fprintf(stderr, "none"); 1965 break; 1966 case PF_DEBUG_URGENT: 1967 fprintf(stderr, "urgent"); 1968 break; 1969 case PF_DEBUG_MISC: 1970 fprintf(stderr, "misc"); 1971 break; 1972 case PF_DEBUG_NOISY: 1973 fprintf(stderr, "loud"); 1974 break; 1975 default: 1976 fprintf(stderr, "<invalid>"); 1977 break; 1978 } 1979 fprintf(stderr, "'\n"); 1980 } 1981} 1982 1983int 1984pfctl_test_altqsupport(int dev, int opts) 1985{ 1986 struct pfioc_altq pa; 1987 1988 if (ioctl(dev, DIOCGETALTQS, &pa)) { 1989 if (errno == ENODEV) { 1990 if (opts & PF_OPT_VERBOSE) 1991 fprintf(stderr, "No ALTQ support in kernel\n" 1992 "ALTQ related functions disabled\n"); 1993 return (0); 1994 } else 1995 err(1, "DIOCGETALTQS"); 1996 } 1997 return (1); 1998} 1999 2000int 2001pfctl_show_anchors(int dev, int opts, char *anchorname) 2002{ 2003 struct pfioc_ruleset pr; 2004 u_int32_t mnr, nr; 2005 2006 memset(&pr, 0, sizeof(pr)); 2007 memcpy(pr.path, anchorname, sizeof(pr.path)); 2008 if (ioctl(dev, DIOCGETRULESETS, &pr)) { 2009 if (errno == EINVAL) 2010 fprintf(stderr, "Anchor '%s' not found.\n", 2011 anchorname); 2012 else 2013 err(1, "DIOCGETRULESETS"); 2014 return (-1); 2015 } 2016 mnr = pr.nr; 2017 for (nr = 0; nr < mnr; ++nr) { 2018 char sub[MAXPATHLEN]; 2019 2020 pr.nr = nr; 2021 if (ioctl(dev, DIOCGETRULESET, &pr)) 2022 err(1, "DIOCGETRULESET"); 2023 if (!strcmp(pr.name, PF_RESERVED_ANCHOR)) 2024 continue; 2025 sub[0] = 0; 2026 if (pr.path[0]) { 2027 strlcat(sub, pr.path, sizeof(sub)); 2028 strlcat(sub, "/", sizeof(sub)); 2029 } 2030 strlcat(sub, pr.name, sizeof(sub)); 2031 if (sub[0] != '_' || (opts & PF_OPT_VERBOSE)) 2032 printf(" %s\n", sub); 2033 if ((opts & PF_OPT_VERBOSE) && pfctl_show_anchors(dev, opts, sub)) 2034 return (-1); 2035 } 2036 return (0); 2037} 2038 2039const char * 2040pfctl_lookup_option(char *cmd, const char **list) 2041{ 2042 if (cmd != NULL && *cmd) 2043 for (; *list; list++) 2044 if (!strncmp(cmd, *list, strlen(cmd))) 2045 return (*list); 2046 return (NULL); 2047} 2048 2049int 2050main(int argc, char *argv[]) 2051{ 2052 int error = 0; 2053 int ch; 2054 int mode = O_RDONLY; 2055 int opts = 0; 2056 int optimize = PF_OPTIMIZE_BASIC; 2057 char anchorname[MAXPATHLEN]; 2058 char *path; 2059 2060 if (argc < 2) 2061 usage(); 2062 2063 while ((ch = getopt(argc, argv, 2064 "a:AdD:eqf:F:ghi:k:K:mnNOo:Pp:rRs:t:T:vx:z")) != -1) { 2065 switch (ch) { 2066 case 'a': 2067 anchoropt = optarg; 2068 break; 2069 case 'd': 2070 opts |= PF_OPT_DISABLE; 2071 mode = O_RDWR; 2072 break; 2073 case 'D': 2074 if (pfctl_cmdline_symset(optarg) < 0) 2075 warnx("could not parse macro definition %s", 2076 optarg); 2077 break; 2078 case 'e': 2079 opts |= PF_OPT_ENABLE; 2080 mode = O_RDWR; 2081 break; 2082 case 'q': 2083 opts |= PF_OPT_QUIET; 2084 break; 2085 case 'F': 2086 clearopt = pfctl_lookup_option(optarg, clearopt_list); 2087 if (clearopt == NULL) { 2088 warnx("Unknown flush modifier '%s'", optarg); 2089 usage(); 2090 } 2091 mode = O_RDWR; 2092 break; 2093 case 'i': 2094 ifaceopt = optarg; 2095 break; 2096 case 'k': 2097 if (state_killers >= 2) { 2098 warnx("can only specify -k twice"); 2099 usage(); 2100 /* NOTREACHED */ 2101 } 2102 state_kill[state_killers++] = optarg; 2103 mode = O_RDWR; 2104 break; 2105 case 'K': 2106 if (src_node_killers >= 2) { 2107 warnx("can only specify -K twice"); 2108 usage(); 2109 /* NOTREACHED */ 2110 } 2111 src_node_kill[src_node_killers++] = optarg; 2112 mode = O_RDWR; 2113 break; 2114 case 'm': 2115 opts |= PF_OPT_MERGE; 2116 break; 2117 case 'n': 2118 opts |= PF_OPT_NOACTION; 2119 break; 2120 case 'N': 2121 loadopt |= PFCTL_FLAG_NAT; 2122 break; 2123 case 'r': 2124 opts |= PF_OPT_USEDNS; 2125 break; 2126 case 'f': 2127 rulesopt = optarg; 2128 mode = O_RDWR; 2129 break; 2130 case 'g': 2131 opts |= PF_OPT_DEBUG; 2132 break; 2133 case 'A': 2134 loadopt |= PFCTL_FLAG_ALTQ; 2135 break; 2136 case 'R': 2137 loadopt |= PFCTL_FLAG_FILTER; 2138 break; 2139 case 'o': 2140 optiopt = pfctl_lookup_option(optarg, optiopt_list); 2141 if (optiopt == NULL) { 2142 warnx("Unknown optimization '%s'", optarg); 2143 usage(); 2144 } 2145 opts |= PF_OPT_OPTIMIZE; 2146 break; 2147 case 'O': 2148 loadopt |= PFCTL_FLAG_OPTION; 2149 break; 2150 case 'p': 2151 pf_device = optarg; 2152 break; 2153 case 'P': 2154 opts |= PF_OPT_NUMERIC; 2155 break; 2156 case 's': 2157 showopt = pfctl_lookup_option(optarg, showopt_list); 2158 if (showopt == NULL) { 2159 warnx("Unknown show modifier '%s'", optarg); 2160 usage(); 2161 } 2162 break; 2163 case 't': 2164 tableopt = optarg; 2165 break; 2166 case 'T': 2167 tblcmdopt = pfctl_lookup_option(optarg, tblcmdopt_list); 2168 if (tblcmdopt == NULL) { 2169 warnx("Unknown table command '%s'", optarg); 2170 usage(); 2171 } 2172 break; 2173 case 'v': 2174 if (opts & PF_OPT_VERBOSE) 2175 opts |= PF_OPT_VERBOSE2; 2176 opts |= PF_OPT_VERBOSE; 2177 break; 2178 case 'x': 2179 debugopt = pfctl_lookup_option(optarg, debugopt_list); 2180 if (debugopt == NULL) { 2181 warnx("Unknown debug level '%s'", optarg); 2182 usage(); 2183 } 2184 mode = O_RDWR; 2185 break; 2186 case 'z': 2187 opts |= PF_OPT_CLRRULECTRS; 2188 mode = O_RDWR; 2189 break; 2190 case 'h': 2191 /* FALLTHROUGH */ 2192 default: 2193 usage(); 2194 /* NOTREACHED */ 2195 } 2196 } 2197 2198 if (tblcmdopt != NULL) { 2199 argc -= optind; 2200 argv += optind; 2201 ch = *tblcmdopt; 2202 if (ch == 'l') { 2203 loadopt |= PFCTL_FLAG_TABLE; 2204 tblcmdopt = NULL; 2205 } else 2206 mode = strchr("acdefkrz", ch) ? O_RDWR : O_RDONLY; 2207 } else if (argc != optind) { 2208 warnx("unknown command line argument: %s ...", argv[optind]); 2209 usage(); 2210 /* NOTREACHED */ 2211 } 2212 if (loadopt == 0) 2213 loadopt = ~0; 2214 2215 if ((path = calloc(1, MAXPATHLEN)) == NULL) 2216 errx(1, "pfctl: calloc"); 2217 memset(anchorname, 0, sizeof(anchorname)); 2218 if (anchoropt != NULL) { 2219 int len = strlen(anchoropt); 2220 2221 if (anchoropt[len - 1] == '*') { 2222 if (len >= 2 && anchoropt[len - 2] == '/') 2223 anchoropt[len - 2] = '\0'; 2224 else 2225 anchoropt[len - 1] = '\0'; 2226 opts |= PF_OPT_RECURSE; 2227 } 2228 if (strlcpy(anchorname, anchoropt, 2229 sizeof(anchorname)) >= sizeof(anchorname)) 2230 errx(1, "anchor name '%s' too long", 2231 anchoropt); 2232 loadopt &= PFCTL_FLAG_FILTER|PFCTL_FLAG_NAT|PFCTL_FLAG_TABLE; 2233 } 2234 2235 if ((opts & PF_OPT_NOACTION) == 0) { 2236 dev = open(pf_device, mode); 2237 if (dev == -1) 2238 err(1, "%s", pf_device); 2239 altqsupport = pfctl_test_altqsupport(dev, opts); 2240 } else { 2241 dev = open(pf_device, O_RDONLY); 2242 if (dev >= 0) 2243 opts |= PF_OPT_DUMMYACTION; 2244 /* turn off options */ 2245 opts &= ~ (PF_OPT_DISABLE | PF_OPT_ENABLE); 2246 clearopt = showopt = debugopt = NULL; 2247#if !defined(ENABLE_ALTQ) 2248 altqsupport = 0; 2249#else 2250 altqsupport = 1; 2251#endif 2252 } 2253 2254 if (opts & PF_OPT_DISABLE) 2255 if (pfctl_disable(dev, opts)) 2256 error = 1; 2257 2258 if (showopt != NULL) { 2259 switch (*showopt) { 2260 case 'A': 2261 pfctl_show_anchors(dev, opts, anchorname); 2262 break; 2263 case 'r': 2264 pfctl_load_fingerprints(dev, opts); 2265 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_RULES, 2266 anchorname, 0); 2267 break; 2268 case 'l': 2269 pfctl_load_fingerprints(dev, opts); 2270 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_LABELS, 2271 anchorname, 0); 2272 break; 2273 case 'n': 2274 pfctl_load_fingerprints(dev, opts); 2275 pfctl_show_nat(dev, opts, anchorname); 2276 break; 2277 case 'q': 2278 pfctl_show_altq(dev, ifaceopt, opts, 2279 opts & PF_OPT_VERBOSE2); 2280 break; 2281 case 's': 2282 pfctl_show_states(dev, ifaceopt, opts); 2283 break; 2284 case 'S': 2285 pfctl_show_src_nodes(dev, opts); 2286 break; 2287 case 'i': 2288 pfctl_show_status(dev, opts); 2289 break; 2290 case 'R': 2291 error = pfctl_show_running(dev); 2292 break; 2293 case 't': 2294 pfctl_show_timeouts(dev, opts); 2295 break; 2296 case 'm': 2297 pfctl_show_limits(dev, opts); 2298 break; 2299 case 'a': 2300 opts |= PF_OPT_SHOWALL; 2301 pfctl_load_fingerprints(dev, opts); 2302 2303 pfctl_show_nat(dev, opts, anchorname); 2304 pfctl_show_rules(dev, path, opts, 0, anchorname, 0); 2305 pfctl_show_altq(dev, ifaceopt, opts, 0); 2306 pfctl_show_states(dev, ifaceopt, opts); 2307 pfctl_show_src_nodes(dev, opts); 2308 pfctl_show_status(dev, opts); 2309 pfctl_show_rules(dev, path, opts, 1, anchorname, 0); 2310 pfctl_show_timeouts(dev, opts); 2311 pfctl_show_limits(dev, opts); 2312 pfctl_show_tables(anchorname, opts); 2313 pfctl_show_fingerprints(opts); 2314 break; 2315 case 'T': 2316 pfctl_show_tables(anchorname, opts); 2317 break; 2318 case 'o': 2319 pfctl_load_fingerprints(dev, opts); 2320 pfctl_show_fingerprints(opts); 2321 break; 2322 case 'I': 2323 pfctl_show_ifaces(ifaceopt, opts); 2324 break; 2325 } 2326 } 2327 2328 if ((opts & PF_OPT_CLRRULECTRS) && showopt == NULL) 2329 pfctl_show_rules(dev, path, opts, PFCTL_SHOW_NOTHING, 2330 anchorname, 0); 2331 2332 if (clearopt != NULL) { 2333 if (anchorname[0] == '_' || strstr(anchorname, "/_") != NULL) 2334 errx(1, "anchor names beginning with '_' cannot " 2335 "be modified from the command line"); 2336 2337 switch (*clearopt) { 2338 case 'r': 2339 pfctl_clear_rules(dev, opts, anchorname); 2340 break; 2341 case 'n': 2342 pfctl_clear_nat(dev, opts, anchorname); 2343 break; 2344 case 'q': 2345 pfctl_clear_altq(dev, opts); 2346 break; 2347 case 's': 2348 pfctl_clear_states(dev, ifaceopt, opts); 2349 break; 2350 case 'S': 2351 pfctl_clear_src_nodes(dev, opts); 2352 break; 2353 case 'i': 2354 pfctl_clear_stats(dev, opts); 2355 break; 2356 case 'a': 2357 pfctl_clear_rules(dev, opts, anchorname); 2358 pfctl_clear_nat(dev, opts, anchorname); 2359 pfctl_clear_tables(anchorname, opts); 2360 if (!*anchorname) { 2361 pfctl_clear_altq(dev, opts); 2362 pfctl_clear_states(dev, ifaceopt, opts); 2363 pfctl_clear_src_nodes(dev, opts); 2364 pfctl_clear_stats(dev, opts); 2365 pfctl_clear_fingerprints(dev, opts); 2366 pfctl_clear_interface_flags(dev, opts); 2367 } 2368 break; 2369 case 'o': 2370 pfctl_clear_fingerprints(dev, opts); 2371 break; 2372 case 'T': 2373 pfctl_clear_tables(anchorname, opts); 2374 break; 2375 } 2376 } 2377 if (state_killers) { 2378 if (!strcmp(state_kill[0], "label")) 2379 pfctl_label_kill_states(dev, ifaceopt, opts); 2380 else if (!strcmp(state_kill[0], "id")) 2381 pfctl_id_kill_states(dev, ifaceopt, opts); 2382 else 2383 pfctl_net_kill_states(dev, ifaceopt, opts); 2384 } 2385 2386 if (src_node_killers) 2387 pfctl_kill_src_nodes(dev, ifaceopt, opts); 2388 2389 if (tblcmdopt != NULL) { 2390 error = pfctl_command_tables(argc, argv, tableopt, 2391 tblcmdopt, rulesopt, anchorname, opts); 2392 rulesopt = NULL; 2393 } 2394 if (optiopt != NULL) { 2395 switch (*optiopt) { 2396 case 'n': 2397 optimize = 0; 2398 break; 2399 case 'b': 2400 optimize |= PF_OPTIMIZE_BASIC; 2401 break; 2402 case 'o': 2403 case 'p': 2404 optimize |= PF_OPTIMIZE_PROFILE; 2405 break; 2406 } 2407 } 2408 2409 if ((rulesopt != NULL) && (loadopt & PFCTL_FLAG_OPTION) && 2410 !anchorname[0]) 2411 if (pfctl_get_skip_ifaces()) 2412 error = 1; 2413 2414 if (rulesopt != NULL && !(opts & (PF_OPT_MERGE|PF_OPT_NOACTION)) && 2415 !anchorname[0] && (loadopt & PFCTL_FLAG_OPTION)) 2416 if (pfctl_file_fingerprints(dev, opts, PF_OSFP_FILE)) 2417 error = 1; 2418 2419 if (rulesopt != NULL) { 2420 if (anchorname[0] == '_' || strstr(anchorname, "/_") != NULL) 2421 errx(1, "anchor names beginning with '_' cannot " 2422 "be modified from the command line"); 2423 if (pfctl_rules(dev, rulesopt, opts, optimize, 2424 anchorname, NULL)) 2425 error = 1; 2426 else if (!(opts & PF_OPT_NOACTION) && 2427 (loadopt & PFCTL_FLAG_TABLE)) 2428 warn_namespace_collision(NULL); 2429 } 2430 2431 if (opts & PF_OPT_ENABLE) 2432 if (pfctl_enable(dev, opts)) 2433 error = 1; 2434 2435 if (debugopt != NULL) { 2436 switch (*debugopt) { 2437 case 'n': 2438 pfctl_debug(dev, PF_DEBUG_NONE, opts); 2439 break; 2440 case 'u': 2441 pfctl_debug(dev, PF_DEBUG_URGENT, opts); 2442 break; 2443 case 'm': 2444 pfctl_debug(dev, PF_DEBUG_MISC, opts); 2445 break; 2446 case 'l': 2447 pfctl_debug(dev, PF_DEBUG_NOISY, opts); 2448 break; 2449 } 2450 } 2451 2452 exit(error); 2453} 2454